Control Specification; Cool Mode - Vivax ACP-09CH25ZNM Service Manual

CONTROL SPECIFICATION

1
1
ABBREVIATION
ST: Setting Temperature
PT: Indoor coil Pipe Temperature
RT: Room Temperature
OT: Outdoor coil pipe temperature
OFAN: Outdoor fan
IFAN: Indoor fan
COMP: Compressor
2 2
OPERATION OF MAIN BOARD

COOL MODE

The ST at cool mode is adjustable within16 -31 .
When RT ST, both the compressor and the outdoor fan start;
When RT<ST-1 , the compressor stops and 18 seconds later, the outdoor fan will stop.
But the indoor fan keeps running at predetermined speed.
Once turning on the unit while set at cool mode, the indoor fan immediately runs at
predetermined speed; if all the conditions meet with the requirement of compressor
operation, both the outdoor fan and compressor start running. If not, either the outdoor
fan or compressor could start.
The four-way valve keeps being off all the time at cool mode.
Condensate dew prevention
If the horizontal air flow louver is set at low angle on COOL mode, after a while, it will auto swing to
its maximum angel for system protection. 3 minutes later, the horizontal air flow louver will resume
to its original position.
Anti-ice function
When PT=2 , the compressor does not stop and indoor fan runs at high speed.
When PT -1
high speed.
When PT 8
outdoor fan start operation.
for 1 minute, the compressor and outdoor fan stop and indoor fan runs at
for 5 minutes, anti-ice protection deactivates, both the compressor and the
8
2
-1
ON ON
OFAN
ON
COMP
IFAN
Set speed
5 mins
OFF
3 mins
OFF
High speed
17
ON
ON
Set speed